After President Donald Trump announced that the U.S. would withdraw from the Paris Climate Agreement, School of Sustainability Assistant Professor Sonja Klinsky went over the possible ramifications with ASU Now. Klinsky, who studies climate negotiations, said that the decision will hurt American business and devastate our country's international credibility. "Already, there are long-standing tensions and questions about the American commitment to climate action," Klinsky explained. "Cumulatively, the U.S. is the single largest emitter of greenhouse gases. Breaking a promise by pulling out of this agreement or by removing domestic regulations will profoundly erode international trust in an arena in which collective action and cooperation is crucial."